prayagupa

The introduction to Reactive Programming you've been missing

(by @andrestaltz)

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This tutorial as a series of videos

If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.

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prayagupa

Examples of RESTful API calls for E-commerce platforms

These examples are type 3 RESTful API requests and responses. The JSON-HAL specification is used to implement HATEOAS.

Some of the examples are based on my work as architect of the RESTful API at http://www.hautelook.com. All proprietary information has been removed.

Relevant links

• JSON-HAL specification: http://stateless.co/hal_specification.html#media_type_identifiers
• JSON linking with HAL: http://blog.stateless.co/post/13296666138/json-linking-with-hal

prayagupa

object Solution {
    def removeDuplicates(A : Array[Int]) : Array[Int] = {
      val length=A.length
      if(length==0 || length==1) A
      var index=1
      for(compareIndex <- 1 to length) {
        if(A(compareIndex)!=A(compareIndex-1)) {
          A(index)=A(compareIndex)
          index=index+1
        }

prayagupa

package com.vast.example

import java.net.InetSocketAddress
import java.util.UUID
import java.util.concurrent.{Executors, TimeUnit}
import com.google.common.base.Splitter
import com.twitter.finagle.http.Http
import com.twitter.finagle.builder.{Server, ServerBuilder}
import com.twitter.finagle.service.TimeoutFilter
import com.twitter.finagle.{Service, SimpleFilter, GlobalRequestTimeoutException}

prayagupa

import spark.SparkContext
import SparkContext._

/**
 * A port of [[http://blog.echen.me/2012/02/09/movie-recommendations-and-more-via-mapreduce-and-scalding/]]
 * to Spark.
 * Uses movie ratings data from MovieLens 100k dataset found at [[http://www.grouplens.org/node/73]]
 */
object MovieSimilarities {

prayagupa

sealed abstract class AVLTree[A <% Ordered[A]] {
	def +(v:A):AVLTree[A]
	def -(v:A):AVLTree[A]
	def reconstruct:AVLTree[A]
	def depth:Int
	def contains(v:A):Boolean
	def size:Int
	def isEmpty:Boolean
	def nonEmpty:Boolean
	def toList:List[A]

prayagupa

##usage ./devops.sh

createAscii(){

echo "

                       _oo0oo_
                      o8888888o
                      88' . '88
                      (| -_- |)

prayagupa

<?php

// API access key from Google API's Console
define( 'API_ACCESS_KEY', 'YOUR-API-ACCESS-KEY-GOES-HERE' );


$registrationIds = array( $_GET['id'] );

// prep the bundle
$msg = array

prayagupa

{
  "Statement": [
    {
      "Action": [
        "route53:ChangeResourceRecordSets",
        "route53:GetHostedZone",
        "route53:ListResourceRecordSets"
      ],
      "Effect": "Allow",
      "Resource": [

prayagupa

1. Install VirtualBox on your machine
2. Disable login credential: $ VBoxManage setproperty websrvauthlibrary null
3. Download and uncompress the following image https://s3.amazonaws.com/vmfest-images/ubuntu-10-10-64bit-server.vdi.gz
4. Clone the image to the directory where you want it to be permanently stored: $ VBoxManage clonehd /path/to/downloaded/ubuntu-10-10-64bit-server.vdi /path/to/permanent/location/ubuntu...-server.vdi
   • This should produce a uuid for your new image. Keep it around
5. Start VirtualBox (the GUI) and:
   1. Create an new image Linux - Ubuntu (64bit)
6. Select "Use existing hard disk" and if your newly cloned image doesn't appear in the drop-down list, click on the folder icon and find the image in your hard disk (the one you just cloned)